Item arrived quickly. Box was making horrible rattling noises. I assumed something was broken. I was correct. The transformer was busted loose from the inside of the unit and all of the anchors in the molded plastic frame of the unit were all broken and the transformer was loose inside of the unit. I however, being very handy and needing the unit ASAP, glued aĺl the broken anchors back into place and re-installed the transformer to the frame. The sealer works very well for the money. The shipping department needs to be more careful or the frame needs better reinforcement to support the weight of the transformer. Otherwise, I would have given a much higher rating. I am usually very impressed with the equipment I get from Vevor. The case and framing on this unit just needs to be improved. Thanks!